110% financing in one or two loans?

with 4% until the remaining debt is paid off without special repayment on the 26k€ about 14k€ interest. I find that really annoying!

In the end, what counts is the cost of the total financing. Evaluating just one component alone is not productive.

And how much flexibility I want to have. So use of equity, etc.

Somehow it's weird here. Why don't you post your net [netto]?

What amounts are we actually talking about here? I mean monthly additional or reduced burden depending on the structure of the financing. If you are seriously worried about the small financing amount, you should be worried about your entire income and expenditure situation. If you are honest with yourself, 0.20% more or less doesn't matter nowadays - of course every euro in your wallet is better than at the bank. Be happy that a bank offers you financing of 110% or more and take it. Therefore, I agree with HilfeHilfe and his comment.

We are not worried; we simply want the best and most sensible offer.

Bank 1 says 110% is no problem.
Bank 2 says 100% is no problem, but 110% is generally not possible with them; the 10% should simply be taken out as a normal loan.

So we’re just wondering which option is more sensible. Where do you end up paying more interest?
If the option with the extra loan is not only more complicated but also more expensive, then we won’t even inquire with Bank 2 anymore, even if their interest rate (2.3%) was below Bank 1’s.

We don’t know the exact amounts; both banks had calculated back then with a fictitious, different sum than the one that has now become concrete.

The question for us was simply whether it is better [...] to finance through two loans, or 110% in a single loan.

That cannot be answered in general, but only based on concrete comparable offers! Variants with even more loans are also possible (KFW+house bank+state bank).

Actually, we did not want a KfW loan at all. I read somewhere that it is usually not as good as it seems at first glance.

Some banks subordinate the KfW, if that works out, it would be a big advantage for you.

In the end, what counts are the costs of the total financing. Evaluating a single component alone is not productive.

Yes and no. When it comes to how much equity you use or how high the loan amount is (with fixed equity, i.e. a larger project scope), it’s about the interest rate that an additional thousand euros of loan cost. So to speak a marginal interest rate. And then you notice that these euros are very expensive. When comparing different offers for a fixed financing concept, of course, only the total costs matter.

To make progress here, in my opinion, a few numbers need to be put on the table.

....Some banks enter the KfW as a subordinated loan, if that works, it would be a big advantage for you....

However, some banks only do this with a loan-to-value ratio under 75%. At least that is what I know from [Alten Leipziger].